Compilare: main.cpp: In function 'int main()': main.cpp:30:14: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(i=0;i<strlen(c);i++) | ~^~~~~~~~~~ main.cpp:58:14: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 58 | for(i=0;i<strlen(c);i++) | ~^~~~~~~~~~